Home / 1,290,699.96-1,781,169.50-709,982.58

Finding the Fourth Proportional to 1,290,699.96, 1,781,169.50 and 709,982.58

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Solution

The fourth proportional to 1,290,699.96, 1,781,169.50 and 709,982.58 is: 979,777.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,699.96 : 1,781,169.50 = 709,982.58 : x
  2. Step 2: Convert to fraction form
    1,290,699.96/1,781,169.50 = 709,982.58/x
  3. Step 3: Cross multiply
    1,290,699.96x = 1,781,169.50 × 709,982.58
  4. Step 4: Simplify right side
    1,290,699.96x = 1,264,599,317,027.31
  5. Step 5: Solve for x
    x = 1,264,599,317,027.31/1,290,699.96
  6. Step 6: Final answer
    x = 979,777.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.